Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20
The AirTAC SAIJ80X800-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 800 mm travel by up to 20 mm. This yields a precise 780-800 mm usable window for fine-tuning the retract end-position during machine commissioning. Built with an SUS304 stainless steel piston rod and PT tapered ports, it delivers a robust 2513 N pull force at 0.5 MPa.
This model features an extruded aluminum barrel with sensor grooves on both sides, distinguishing it from tie-rod designs. The 25 mm rod and M20x1.5 thread handle high side loads, though an 800 mm stroke demands an external guide to prevent rod sag. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20 Is Used
Machine Setup & Changeover
Fine-tune the 780-800 mm retract position during product size changeovers without physically swapping the cylinder or adding external stops.
Variable End-Stops
Dial in the exact end-of-stroke position on a long-stroke conveyor diverter to accommodate varying package lengths on the fly.
Long-Stroke Assembly Presses
Use the 2513 N pull force and adjustable retract stop to set precise lower bounds for long-travel pressing or forming operations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20 the Right Cylinder?
Choose this 80 mm bore when you need 2513 N pull force at 0.5 MPa, or step up to the 100 mm bore for 3681 N if your load demands more push power. The adjustable stroke is ideal for variable end-stops and product changeovers, preventing the need to swap out a fixed-stroke SAI cylinder. For exact ISO 15552 replacement matching, verify the 80 mm bore, 800 mm stroke, 20 mm adjustment, PT port, and mounting style. Because the stroke is 800 mm, an external guide is recommended to manage side loads.
Remember that the rear adjuster acts only as a travel stop, not a lock. It cannot hold a load without live air pressure; for secure load-holding, consider the SAIL or BSAI series instead. This cylinder lacks a magnet, so it will not work with CMSE or DMSE sensors without modification.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20 FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of pull force and 3518 N of push force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster allows you to shorten the 800 mm nominal stroke by up to 20 mm, creating a 780-800 mm travel window. This stopper only sets the end position; it does not lock the load without live air.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80BX800-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.